MIC5190YMM-TR

Overview

The MIC5190YMM-TR is an ultra high-speed linear regulator controller utilizing an external N-Channel FET. It provides a +1.0% initial output tolerance and supports adjustable output voltages down to 0.5V, with a minimum of 0.5V for the Y variant. The device operates within an input voltage range of 0.9V to 5.5V and features dropout as low as 25mV at 10A. It offers large signal bandwidth exceeding 500kHz and PSRR greater than 40dB at 500kHz. The component is housed in a 10-lead MSOP-10 package and functions across a junction temperature range of –40°C to +125°C.

Feature Summary

• Ultra high-speed operation with large signal bandwidth exceeding 500kHz for fast load demands
• Logic controlled shutdown via active-high enable pin
• Current limit protection with ISENSE pin functionality
• Stable with any output capacitor type or value

Applications

• Distributed power supplies
• ASIC power supplies
• DSP, µP, and µC power supplies

Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the tape and reel packaging format specified by Micrel. Confirm the 'Y' designation indicates the adjustable output voltage variant with a 0.5V reference. Ensure the MSOP-10 package matches the required PCB footprint. Cross-reference the manufacturer part number against official Microchip/Micrel documentation to validate authenticity before procurement.

Selection Notes

Select this controller when driving external N-Channel MOSFETs requiring high transient response speeds. Ensure the external MOSFET gate capacitance remains below 10nF to maintain performance. Verify that the VCC supply voltage meets the threshold requirements for the selected MOSFET. Design compensation networks using the COMP pin to achieve desired phase margins and stability.

Part Context

The MIC5190 series consists of ultra high-speed linear regulator controllers designed for high-current applications. The Y variant specifically targets adjustable output voltages starting from 0.5V. The MM suffix denotes the 10-lead MSOP package. This controller complements switching regulators by filtering noise and improving transient response in sensitive digital loads.

Replacement Considerations

MIC5190BML

FAQ

What is the minimum output voltage for the MIC5190Y?

The MIC5190Y has an internal 0.5V reference, allowing for adjustable output voltages down to a minimum of 0.5V.

How does the MIC5190 handle load transients?

It utilizes an ultra high-speed control loop with bandwidth greater than 500kHz to respond rapidly to load changes, minimizing output voltage deviation.